CN209916384U - Micro-negative pressure foam dressing - Google Patents

Abstract

The utility model discloses a little negative pressure foam dressing and manufacturing method thereof, the dressing includes: the heating agent layer, the isolation component covering the heating agent layer, the elastic memory sheet arranged below the heating agent layer, the liquid absorption negative pressure pad arranged below the elastic memory sheet, the contact layer arranged below the liquid absorption negative pressure pad, the sealing film arranged between the liquid absorption negative pressure pad and the contact layer, and the bottom release film arranged below the contact layer; the utility model discloses a generating heat agent layer produces heat and makes the downward inflation of elasticity memory piece oppress the foam blanket, treats that the heat scatters to the greatest extent, and seal membrane, contact layer and surface of a wound constitute an airtight border, produce little negative pressure, easy operation, with low costs, conveniently carry.

Description

Micro-negative pressure foam dressing

Technical Field

The utility model relates to a dressing field, especially a little negative pressure foam dressing.

Background

The negative pressure drainage technology is widely applied clinically, and can absorb liquefied substances such as oozing blood, effusion, liquefied necrotic tissue fragments and septic liquid of a human body and the like to the outside of a wound surface. Promoting the generation of new vessels and rapidly increasing granulation tissues, thereby accelerating the healing speed of wounds and relieving the pain of patients. However, the VSD negative pressure technology which is commonly used clinically at present has the defects of complex operation, high cost, inconvenience in carrying and the like; the utility model solves the problems.

SUMMERY OF THE UTILITY MODEL

For solving prior art's not enough, the utility model aims to provide a little negative pressure foam dressing, the agent layer that generates heat makes the downward inflation of elastic memory piece oppress the foam layer, treats the heat and scatters to the greatest extent, and seal membrane, contact layer constitute an airtight border with the surface of a wound, produce little negative pressure, easy operation, it is with low costs, conveniently carry.

In order to achieve the above object, the utility model adopts the following technical scheme:

a micro-negative pressure foam dressing comprising: the heating agent layer covers the isolation component on the heating agent layer, the elastic memory sheet is arranged below the heating agent layer, the liquid absorption negative pressure pad is arranged below the elastic memory sheet, the contact layer is arranged below the liquid absorption negative pressure pad, the sealing film is arranged between the liquid absorption negative pressure pad and the contact layer, and the bottom release film is arranged below the contact layer.

In the micro negative pressure foam dressing, the liquid absorption negative pressure pad is a foam layer.

The micro negative pressure foam dressing comprises the following foam layers: a flexible silicone foam layer, a polyurethane foam layer.

In the micro negative pressure foam dressing, the isolation component comprises: the non-woven fabric is arranged on the heating agent layer, and the top release film covers the non-woven fabric.

In the micro negative pressure foam dressing, the elastic memory sheet comprises: memory resin sheet, PP sheet, PU sheet.

In the micro negative pressure foam dressing, the contact layer is a perforated silicone gel layer.

In the micro negative pressure foam dressing, the sealing film is a polyurethane film.

In the micro negative pressure foam dressing, the opening part is arranged on the release film of the bottom layer.

The utility model discloses an useful part lies in:

the utility model has the advantages that the heating agent layer generates heat to enable the elastic memory sheet to expand downwards to compress the foam layer, when the heat is dissipated, the sealing film, the contact layer and the wound surface form a closed environment to generate micro negative pressure, the VSD negative pressure technology is not needed, the operation is simple, the structure is simple, the cost is low, the volume is small, and the carrying is convenient;

micro negative pressure lasts for a long time, and the negative pressure time is 48 to 72 hours;

the utility model discloses a product and surface of a wound contact layer do not have glue, do not cause sensitively, and not adhesion wound can alleviate patient's pain.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

The meaning of the reference symbols in the figures:

1 heating agent layer, 2 elasticity memory pieces, 3 imbibition negative pressure pads, 4 contact layers, 5 sealing films, 6 bottom release films, 601 opening parts, 7 non-woven fabrics and 8 top release films.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

A micro-negative pressure foam dressing comprising: heating agent layer 1 covers the isolation component on heating agent layer 1, sets up in elasticity memory piece 2 under heating agent layer 1, sets up imbibition negative pressure pad 3 under elasticity memory piece 2, sets up contact layer 4 under imbibition negative pressure pad 3, sets up seal membrane 5 between imbibition negative pressure pad 3 and contact layer 4, sets up the bottom under contact layer 4 from type membrane 6.

As an example, the liquid-absorbent negative pressure pad 3 is a foam layer; the material of the foam layer can be selected from soft silicone, polyurethane and gelatin sponge; if soft silicone is chosen, this layer is both the underpressure layer and the absorption layer. The material of the liquid-absorbing negative pressure pad 3 is not limited.

Preferably, the material of the foam layer is soft silicone foam; the advantages are that: the texture is soft, and the mechanical compression on the wound is low; the liquid absorption amount is large, the exudate which is 6 to 8 times of the weight of the contact layer can be absorbed, the raw materials are easy to obtain, and the composite strength of the contact layer 4 is good; the disadvantages are as follows: compared with polyurethane foam, the material price is 1.7 times of that of polyurethane foam.

As another preference, the material of the foam layer is selected from polyurethane foam materials; the advantages are that: the price is low, the texture is softer, the liquid absorption amount is 4-6 times of the self weight, and the raw materials are easy to obtain; the disadvantages are as follows: the complex fastness with the contact layer 4 is not strong.

As another preference, the material of the foam layer is selected from gelatin sponge; the advantages are that: the liquid absorption amount is large, and the composite strength with the contact layer 4 is good; the disadvantages are as follows: the mechanical strength is larger than the two sponges, the texture is coarser, and the price is high.

The formula of the heating agent layer 1 comprises the following components in percentage by mass: iron powder: activated carbon: salt: vermiculite: water ═ (40 ± 10): (15 ± 10)): (5 ± 3): (10. + -. 3): (5 +/-3), the proportion of the activated carbon to the vermiculite is reduced, the heat dissipation speed is accelerated, the elastic memory sheet 2 deforms and contracts violently, the negative pressure is obvious, and as a preferred selection, the optimal formula of the heating agent layer 1 comprises the following components in percentage by mass: iron powder: activated carbon: salt: vermiculite: water-40: 15: 5: 10: 5.

the isolation component comprises: a non-woven fabric 7 arranged on the heating agent layer 1, and a top release film 8 covering the non-woven fabric 7. As an example, the top release film 8 and the bottom release film 6 can be one of PET release film, OPP release film, PEK release paper, CCK release paper, and glassine release paper.

As an example, the elastic memory sheet 2 may be selected from materials including: memory resin, PP, PU.

Preferably, the contact layer 4 is a perforated silicone gel layer, the perforated silicone gel layer is the contact layer 4, and the silicone gel is adhered to the skin in such a manner as to increase the area of contact with the skin. The contact can be adhered to the skin on the premise of not using glue, so that the application is prevented from being lifted to cause secondary damage to the wound.

As an example, the sealing film 5 is a polyurethane film, the material is not limited, and a polyethylene film may be selected; a polypropylene film; a nylon film.

An opening part 601 is arranged on the bottom release film 6, after the top release film 8 is torn, a small opening needs to be torn on the bottom release film 6, and after standing for 5min, the bottom release film 6 is thoroughly torn; therefore, the heating layer is contacted with the air for 5min to generate enough heat, so that the elastic memory sheet 2 absorbs heat to expand and deform, and the elastic memory sheet 2 dissipates heat and contracts to generate negative pressure after the dressing is attached to a wound.

The using method comprises the following steps: tearing off the upper release film of the product, tearing off a small opening from the opening part 601 on the release film 6 layer at the bottom layer, standing for 1min, tearing off the release film 6 layer at the bottom layer, and applying the micro-negative pressure foam to the wound surface.

The use principle is as follows: tear the product top from the type membrane, let the air contact heating agent, the production of heat makes elasticity memory piece 2 expand downwards and oppress the foam blanket, pastes the product in surface of a wound department this moment. When the heat is dissipated, the elastic memory sheet 2 is cooled and contracted to be rebounded to the original state, but a closed environment is formed by the polyurethane film layer, the perforated silicon gel layer composite layer and the wound surface, so that micro negative pressure is generated.

The specific manufacturing process comprises the following steps:

the method comprises the following steps: spreading the silicon gel film on a horizontal plane, and punching by a mechanical punching mode;

step two: spreading the perforated silicone gel film on the composite board, and placing a hemispherical liquid absorption negative pressure pad 3 on the upper surface;

step three: covering the cut sealing film 5 on the liquid absorption negative pressure pad 3, and compounding the silicone gel layer and the sealing film 5 by using an annular pressing roller to obtain a semi-finished product;

step four: transferring the semi-finished product to a vacuum operation table;

step five: the elastic memory sheet 2 is arranged above the sealing film 5, and the heating agent layer 1 is coated above the elastic memory sheet 2;

step six, covering the cut non-woven fabric 7 coated with a small amount of glue on the upper part, and slightly pressing the non-woven fabric 7 to enable the non-woven fabric 7 to be bonded with the sealing film 5 of the heating agent layer 1;

step seven: respectively placing the cut release films at proper positions above and below the product, and compounding by using an annular compression roller;

step eight: taking out the product, and punching and forming; packaging and sterilizing.

According to the preparation method, 72 products are prepared, and 72 volunteers of ulcer patients are summoned;

these 72 ulcer patients were subjected to a contact test in which 1 was the patient's missed visit and 71 recorded diary cards as follows:

the result shows that the micro negative pressure of the product lasts for a long time, and the negative pressure time is 48-72 hours.

The utility model provides a little negative pressure foam dressing, 1 heat generation of heating agent layer make the oppression foam blanket of the downward inflation of elastic memory piece 2, treat that the heat scatters to the greatest extent, and seal membrane 5, contact layer 4 constitute an airtight bad border with the surface of a wound, produce little negative pressure, easy operation, with low costs, conveniently carry.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims (8)

1. A micro-negative pressure foam dressing, comprising: generate heat the agent layer, cover isolation component on the agent layer generates heat, set up in generate heat the elasticity memory piece under the agent layer, set up in imbibition negative pressure pad under the elasticity memory piece, set up in the contact layer under the imbibition negative pressure pad, set up in seal membrane between imbibition negative pressure pad and the contact layer, set up in the bottom under the contact layer is from the type membrane.

2. The micro-negative pressure foam dressing of claim 1, wherein the liquid-absorbent negative pressure pad is a foam layer.

3. The micro-negative pressure foam dressing of claim 2, wherein the foam layer comprises: a flexible silicone foam layer, a polyurethane foam layer.

4. The micro-negative pressure foam dressing of claim 1, wherein the isolation component comprises: the non-woven fabric is arranged on the heating agent layer, and the top layer release film covers the non-woven fabric.

5. The micro-negative pressure foam dressing of claim 1, wherein the elastic memory sheet comprises: memory resin sheet, PP sheet, PU sheet.

6. The micro-negative pressure foam dressing of claim 1, wherein the contact layer is a perforated silicone gel layer.

7. The micro negative pressure foam dressing of claim 1, wherein the sealing film is a polyurethane film.

8. The micro negative pressure foam dressing of claim 1, wherein the bottom release film is provided with an opening.

Images